/* 引入网络字体（Poppins） */
@import url("../../fonts/poppins.css");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins";
}
body {
  /* 默认最小高度：2屏 */
  min-height: 200vh;
  background-color: #000;
}
header {
  /* 固定定位 */
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  /* 弹性布局 */
  display: flex;
  /* 将元素靠边对齐 */
  justify-content: space-between;
  align-items: center;
  padding: 40px 100px;
  z-index: 1;
  /* 动画过渡 */
  transition: 0.6s;
}
header .logo {
  font-size: 32px;
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  /* 转大写 */
  text-transform: uppercase;
  /* 字间距 */
  letter-spacing: 2px;
  transition: 0.6s;
}
header ul {
  display: flex;
  justify-content: center;
  align-items: center;
}
header ul li {
  list-style: none;
}
header ul li a {
  margin: 0 15px;
  text-decoration: none;
  color: #fff;
  font-weight: 500;
  letter-spacing: 2px;
  transition: 0.6s;
}
.banner1 {
  position: relative;
  width: 100%;
  height: 100vh;
  background: url("../../images/car/car1.jpg") no-repeat;
  /* 保持原有尺寸比例，裁切长边 */
  background-size: cover;
  /* 图片定位正中间 */
  background-position: center center;
}
.banner2 {
  position: relative;
  width: 100%;
  height: 100vh;
  background: url("../../images/car/car2.jpg") no-repeat;
  background-size: cover;
  background-position: center center;
}
/* 鼠标滚动后，改变导航栏样式 */
header.sticky {
  padding: 6px 100px;
  background-color: #fff;
}
header.sticky .logo,
header.sticky ul li a {
  color: #000;
}
